For this thread, a scam coin is defined to be one where the insiders have hyped features which can not work as described or features which do not exist and profited on selling coins (tokens) to the market. Scam coins do not have actual usership and do nothing to help the crypto currency ecosystem grow because they are just mining the speculators and preselling hype. Having no usership is not by itself an indicator of a scam coin, for as long as there is sincere effort and realistic plans to achieve user adoption and network effects (but a year after selling $18 million in tokens for vaporware and still having only ~0 users is a strong indicator of scam), and not just predominately selling hype for insiders to sell tokens to mine the speculators. In other words, a scam coin is just using hype (and not actual technical achievements that have been well vetted by substantial and non-biased expert peer review) to pretend to be about real adoption and really just exists to create and sell tokens.